Improvement in key-hole escutcheon s



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sIMEoN W. nRoWNnfiF Nonwron, CONNECTICUT.

Lette/rs Patent N 104,838, dated .Tune 28, 1870.

IMPROVEMENT IN KEY-HOLE ESCUTCHEONS.

The Schedule referred to in'thes'e Letters Patent and making part of the same.

To all persons to who-m these presents may come:

disk. o1' plnte,and devices, as hereinafter described,

combined with it, for fixing it to a. door.

In the drawing- Figure 1 denotes a. front viewz.

Figure 2, a. top view;

Figure 3, c rear elevation; and Y Figure 4, a. bottomedge view of un esc'utcheon of my invention. l

Figure 5 is n. rear elevation and ,Figure 6, a. top view of an escutcheon involving another mode in which I heve'contemplated the appli# cation of the principle of my invention.

In the said drawing- A denotes the escutcheon-plate,'formed with n keyhole, a, going through it.

'lhere is projected from the remzfztce of the plate, and on opposite sides of the key-hole, two guides, b b, from each of which there is extended csharp wedgeshztped spul', c, the whole being :is represented.

In figs. 2, 3, and 4,' the guides are sho'wnpas rectangular projections, but in figs. 5 :tud 6 they` are represented as curved concentricztlly with the periphery of the disk A. When made in this letter form, the guides are intended to be introduced into n cylindrical hole bored by a. bit.4

To fix `into c door the escntcheon shown in iigs. l, 2, 3, und 4, n socket or mortise, ofthe form shown in Figure 7, should be cut in the door, after which the plate should be luid against the fece of the door, with the guides and spurs extended into the mortise. Next the plete should beV forced or driven downward, so as to cause the spurs to pass into the wood on the flanks of the mortise, until the guides may abut against thebottom of the morti`se f ,Dhe guides not only serve to support the wood while the spurs are entering it, as well as afterward, but to guide the escutcheon-plate during its movement to fix the spurs into the wood.

In applying to a. door the plate madewith the' curved guides, a mortise, of the form shown in Figure 8,^is to bc first made in the door, it consisting of n a. cylindrical hole, h, with notches n n projected from it. The notches are to receive the spurs, and the hole h is to receive the guides. After such iutroduction of thecurved guides and the spurs, the plate, by means of :t screwfdriver orvv other proper to'ol, should be revolved ninety degrees, so as to bring the keyhole in an upright position, and ccnse the spurs to enter the wood and hold the pletev to the door.

The advent-age of my improved escutcheon-iplate over most, if not all others in` use, is that it requires no screws or nails to i'r it to the door, und, when once in place thereon, presents n better iiuish.

'lhe plate muy he madewith the spurs without the guides, but itV is far preferable to have thelntter com-V bined with the spurs and plate. f I claim the key-hole escutcheon, :1s made or provided with t-he fastening-spurs, or with such and the guides, the whole being substantially es described.

SIMEON W'. BROWN E.

Witnesses R. H. EDDY, J. R. Sxow. 

